General Info

WMI, formerly known as Williams Mechanical, is an employee-owned, full-service mechanical, electrical and plumbing contractor in Southern California. The company serves several commercial and residential clients. It offers engineering, planning, fabrication, and design and build services. WMI serves the health care and educational sectors, as well as the federal, state and local government agencies. Established in 1952, its clients include Advanced Building Group, Southern Sun Construction Company, ROEL Construction and Davis Reed Construction. The company undertakes projects for hotels, restaurants and apartment complexes. It maintains a service department that operates 24 hours a day, seven days a week. The company also offers estimation and budgeting services. WMI has undertaken projects for Swinerton Builders and Toll Brothers.